Comparison : Item # Q51, 19 cfm Air Flow Single Phase Basic Industrial Air Compressor
Item # Q53, 19 cfm Air Flow Three Phase Basic Industrial Air Compressor
Item # Q71, 25 cfm Air Flow Single Phase Basic Industrial Air Compressor
Item # Q73, 25 cfm Air Flow Three Phase Basic Industrial Air Compressor
Item # Q71-6, 32 cfm Air Flow Single Phase Basic Industrial Air Compressor